采用溶胶-凝胶法制备了(MnCu)组合掺杂W型钡钴铁氧体Ba(MnCu)xCo2-2x Fe16O27(x=0.1、0.2、0.3、0.4、0.5)样品.用XRD和SEM对样品的晶体结构、表面形貌、粒径进行了表征,用微波矢量网络分析仪测试了该样品在2～18GHz微波频率范围的电磁参数,根据测量数据计算电磁损耗角正切及得出微波反射率与频率的关系,探讨了该材料的微波吸收性能与电磁损耗机理.研究结果表明,Ba(MnCu)xCo2-2xFe16O27晶粉呈微米级六角片状形貌,煅烧温度1235℃以上的晶体结构为W型,是一种宽频带强损耗微波吸收材料.当x=0.3时,厚度为2.3mm的样品在频率为10GHz处的吸收峰为24dB,10dB以上频带宽度达8.8GHz.样品的微波吸收主要来自畴壁共振、磁化弛豫和自然共振引起的磁损耗,介电损耗较弱.
参考文献
| [1] | A. Ghasemi;A. Hossienpour;A. Morisako .Electromagnetic properties and microwave absorbing characteristics of doped barium hexaferrite[J].Journal of Magnetism and Magnetic Materials,2006(2):429-435. |
| [2] | Sugimoto S;Haga K;Inomata T K K .Microwave absorption properties of Ba M-type ferrite prepared by a modified coprecipitation method[J].Journal of Magnetism and Magnetic Materials,2005,290-291:1188. |
| [3] | Ali Ghasemi;Ardeshir Hossienpour;Akimitsu Morisako;Xiaoxi Liu;Azadeh Ashrafizadeh .Investigation of the microwave absorptive behavior of doped barium ferrites[J].Materials & Design,2008(1):112-117. |
| [4] | Ghasemi A;Liu Xiaoxi;Morisako A .Magnetic and microwave absorption properties of BaFe12-χ (Mn0.5 Cu0.5 Zr)χ/2 O19 synthesized by sol-gel processing[J].Journal of Magnetism and Magnetic Materials,2007,316(02):e105. |
| [5] | Ghasemi A;Morisako A .Static and high frequency magnetic properties of Mn-Co-Zr substituted Ba-ferrite[J].Journal of Alloys and Compounds,2008,456(1-2):485. |
| [6] | Zhang Haijun;Liu Zhichao;Ma Chengliang .Complex permittivity, permeability, and microwave absorption of Zn- and Ti-substituted barium ferrite by citrate sol-gel process[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2002(3):289-295. |
| [7] | Narang S;Singh C;Bai Y et al.Microstructure,hysteresis and microwave absorption analysis of Ba1-χ Srχ Fe12 O19 ferrite[J].Materials Chemistry and Physics,2008,111(2-3):225. |
| [8] | Tabatabaie F;Fathi M H;Saatchi A et al.Microwave absorption properties of Mn-and Ti-doped strontium hexaferrite[J].Journal of Alloys and Compounds,2009,470(1-2):332. |
| [9] | Wang Lixi;Song Jie et al.The microwave magnetic performance of Sm3+ doped BaCo2Fe16O27[J].Journal of Alloys and Compounds,2009,481(1-2):863. |
| [10] | Sharma R;Agarwala R C;Agarwala V .Development of radar absorbing nano crystals by microwave irradiation[J].Materials Letters,2008,62(15):2233. |
| [11] | Mu Guohong;Chen Na;Pan Xifeng et al.Preparation and microwave absorption properties of barium ferrite nanorods[J].Materials Letters,2008,62(6-7):840. |
| [12] | Wang Xian;Gong Rongzhou;Li Peigang et al.Effects of aspect ratio and particle size on the microwave properties of Fe-Cr-Si-A1 alloy flakes[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2007,466(1-2):178. |
| [13] | Singh P.;Razdan A.;Puri RK.;Goel TC.;Babbar VK. .Complex permittivity, permeability, and X-band microwave absorption of CaCoTi ferrite composites[J].Journal of Applied Physics,2000(9 Pt.1):4362-4366. |
| [14] | 刘树信,王海滨,霍冀川,吕淑珍.溶胶-凝胶法制备W型钡铁氧体及结构分析[J].无机盐工业,2009(10):18-20. |
| [15] | Osamu Yamamoto;Jun Sawai;Tadashi Sasamoto .Activated carbon sphere with antibacterial characteristics[J].Materials transactions,2002(5):1069-1073. |
| [16] | 许乃岑,宋杰,王丽熙,沈加林,张其土.镝掺杂W型钡镍铁氧体的制备及电磁性能研究[J].稀有金属,2010(02):307-311. |
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